- Ecotoxicology 8
- Environmental Health 8
- Environment, general 7
- Environmental Chemistry 7
- Atmospheric Protection/Air Quality Control/Air Pollution 6
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 6
- Soil Science & Conservation 4
- Ecology 2
- Monitoring/Environmental Analysis 2
- Pollution, general 2
- Atmospheric Sciences 1
- Data-driven Science, Modeling and Theory Building 1
- Environmental Management 1
- Environmental Physics 1
- Occupational Medicine/Industrial Medicine 1
- Public Health 1
- Rehabilitation 1